Desgaste abrasivo e corrosivo em bolas de moinho


Comminution operation are the most energy consuming in the mineral industry. Therefore, the lowering in the consumption of energy and grinding media must be considered among the key objectives of mineral processing, for both economical and environmental reasons. Concerning the consumption of balls, it is necessary to understand the wear mechanisms that take place during grinding process, as well as to consider the details of such process like the inhomogeneous feed and the interaction between mineral pulp and grinding media. Wt grinding can also add a corrosive component to total wear mechanism, and then rates are expected to rise from synergies between corrosive and abrasive components. Though corrosion phenomena are broadly accepted to happen in wet grinding – even when the ball alloy has high chromium content – studies on verifying its importance are scarce. This study presents a brief literature review focused on understanding the main factors that affect the corrosive wear of balls during wet milling of iron ore, and how corrosive and abrasive wear are related in this condition.

MASSOLA, Camila Peres; ALBERTIN, Eduardo; SANTOS, Célia Aparecida Lino dos; LIMA, José Renato Baptista. Desgaste abrasivo e corrosivo em bolas de moinho. In: INTERNATIONAL CONGRESS ON THE SCIENCE AND TECHNOLOGY OF IRONMAKING, ICSTI, 6., 2012, Rio de Janeiro. Proceedings… 8p

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